Monthly record of hayakawa007's rank (dan/kyu)
month dan/kyu win/lose win ratio
2017 /08 9.00 Kyu 1 win 0 lose 1.00
2017 /04 1.54 Kyu 21 win 20 lose .512
2017 /03 1.24 Kyu 17 win 14 lose .548
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